Calculate the molecular mass of the element They give:H=1,AI=27,S=32,0=16,Cu=64,P=31 ,Mg=24,N=14,Na=23

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

How do you know when a chemical reaction has occurred

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )